import utils.*;

public class WrapperDemo {
	static public void main(String[] args){
		int a = 10;
		int b = 20;
		Integer data_a = new Integer(a);
		Integer data_b = new Integer(b);
		
		Utils.printf("%s\n", data_a.toString());
		Utils.printf("%s\n", data_b.toString());
		Utils.println(data_a.compareTo(data_b));
	}
}
